An educational psychologist wanted to investigate how revision schedules affect pre-exam anxiety in A-level students. She conducted an independent groups experiment where one group of students utilized a 'spaced retrieval' schedule (short study blocks spread over several weeks). A different group of students utilized a 'massed cramming' schedule (continuous study the night before the exam). Just prior to entering the exam hall, participants were asked to rate their current anxiety levels on a scale of 1 ('completely relaxed') to 10 ('extremely anxious').
| Anxiety level ratings (1–10) | |
|---|---|
| Spaced Retrieval Group | Massed Cramming Group |
| 3 | 8 |
| 4 | 7 |
| 2 | 9 |
| 5 | 6 |
| 4 | 8 |
| 3 | 7 |
| 6 | 5 |
| 2 | 9 |
| 5 | 8 |
| 3 | 6 |
| 4 | 7 |
| 2 | 8 |
Outline one advantage of collecting quantitative data rather than qualitative data in this study.
